DEMENT & KLEITMAN (1957)
REM SLEEP AND DREAMING
EVALUATION
Physiological Approach
Starter:
Evaluating Dement and Kleitman
• With the person next to you:
• Using your questions from last lesson, spend about 5 minutes
quizzing each other.
Group Task
• We have now discussed some ideas about the
evaluation of this study
• You’ve become adept at evaluating studies now
so in groups you have 25-30 minutes to go
through the evaluation
• Make sure you have at least one point for each
s/w
Content Page
Research: Dement & Kleitman
1. Method
2. Sample
3. Data Collection
4. Reliability
5. Validity
6. Suggested Changes
7. Debates
8. Issues
1. METHOD:
2. SAMPLE
STRENGTHS
WEAKNESSES
3. DATA COLLECTION
STRENGTHS
WEAKNESSES
4. RELIABILITY
STRENGTHS
WEAKNESSES
4. VALIDITY
STRENGTHS
INTERNAL
ECOLOGICAL
WEAKNESSES
5. SUGGESTED CHANGES
Improvement 1
P
The thing that I would improve is the ecological validity of the study,
because Dement and Kleitman’s study was carried out in a sleep
laboratory which is not a natural setting.
E
I would do this by… Monitoring participants in their own home. I
would have a doctor visit the participants’ houses and connect the
EEG equipment in order to record their sleep stages in their natural
home environment.
C
A strength of this change is that the results would be more ecologically
valid than…because I have….
This is a strength because my results will be more representative
of…therefore we can…
Improvement 2
P
E
C
Issues
QUAL/QUAN DATA
LONG/SNAPSHOT
ECOLOGICAL VALIDITY
SEE EARLIER
ETHICS
FINE
DEBATES
PSYCHOLOGY AS A SCIENCE
USEFULNESS
Homework
• Research:
• Eye witness testimony:
• Is it reliable?
• What are the issues with it?
• Are there any examples of when it has not worked?
• In your opinion, should it be used as evidence in court?
• Watch this:
• Due next lesson